What is the slope of the line perpendicular to $y=4/7x+13$ ?

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Answer 1 · 2016-01-02T03:10:44

$m = -7/4$

The word perpendicular mean that two lines intersect "cut" each other at a 90 degree angle.

Therefore both line have slopes that are negative reciprocal to each other

Negative meant- opposite in side
Reciprocal- "flip flop" aka invert the slope

From your question $y = 4/7 x + 13$

We know the original slope if $m= 4/7$

Perpendicular slope is $m_2 = -7/4$

What is the slope of the line perpendicular to y=4/7x+13 y=4/7x+13?